linux-kernel - Re: [PATCH v3 0/6] mips: system call table generation support

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Date:   Thu, 6 Dec 2018 17:43:27 +0000 (GMT)
From:   "Maciej W. Rozycki" <macro@...ux-mips.org>
To:     Joseph Myers <joseph@...esourcery.com>
cc:     Paul Burton <paul.burton@...s.com>,
        Firoz Khan <firoz.khan@...aro.org>,
        "open list:RALINK MIPS ARCHITECTURE" <linux-mips@...ux-mips.org>,
        Ralf Baechle <ralf@...ux-mips.org>,
        James Hogan <jhogan@...nel.org>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Philippe Ombredanne <pombredanne@...b.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Kate Stewart <kstewart@...uxfoundation.org>,
        y2038 Mailman List <y2038@...ts.linaro.org>,
        Arnd Bergmann <arnd@...db.de>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Linux-Arch <linux-arch@...r.kernel.org>,
        Deepa Dinamani <deepa.kernel@...il.com>,
        Marcin Juszkiewicz <marcin.juszkiewicz@...aro.org>,
        libc-alpha@...rceware.org
Subject: Re: [PATCH v3 0/6] mips: system call table generation support

On Thu, 6 Dec 2018, Joseph Myers wrote:

> >  So how are `SYS_<name>' macros generated that land in <bits/syscall.h>?
> 
> By gen-syscall-h.awk, which generates #ifdef conditionals for each 
> possible __NR_* name (as listed in syscall-names.list in glibc).

 I seem to remember having to take extra care with how the three MIPS ABIs 
wire the syscalls to get it right in glibc, but I take it then this has 
been now addressed reliably enough for the glibc not to care how exactly
<asm/unistd.h> has been arranged.

 Given my current level of involvement with the MIPS architecture I take 
your word for it and will not investigate it any further.  Thanks for your 
input.

  Maciej